CA1337028C - Innovative pressure foot structure for sewing machine - Google Patents
Innovative pressure foot structure for sewing machineInfo
- Publication number
- CA1337028C CA1337028C CA000606201A CA606201A CA1337028C CA 1337028 C CA1337028 C CA 1337028C CA 000606201 A CA000606201 A CA 000606201A CA 606201 A CA606201 A CA 606201A CA 1337028 C CA1337028 C CA 1337028C
- Authority
- CA
- Canada
- Prior art keywords
- pressure foot
- sewing machine
- machine according
- pressure
- rolling members
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/06—Presser feet
- D05B29/10—Presser feet with rollers
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
This invention is related to an innovative pressure foot structure for sewing machine and more particularly to a pressure foot having one or more elongated slots made thereon for setting therein of one or more rolling members to minimize the friction force during sewing process. A guide means is connected to the pressure foot at one lateral side or connected to the bottom of the pressure foot at one side to guide the feeding of the fabric or leather cloth to sew.
Description
BACKGROUND AND SUMMARY OF THE INVENTION
During sewing process through a sewing machine, the fabric or leather cloth is pushing forward by means of an uppeI feeder .member and a lower feeder member, and is pressed by a pressure foot to keep in a smooth and non-corrugation condition to facilitate the performing of sewing process, which pressure foot is flexibly connected to a pressure bar by means of a spring means. During sewing process or while the fabric or leather cloth is feeding forward, friction force.is resulted fr.om the press~re :foot against the fabric or leather cloth to interfere with the performing of the Cont'd/2 sewing process. This problem may become more serious while sewing in a thick and coarse fabric or leather cloth. In order to minimize the friction force resulted from feeding of the cloth during sewing process, some manufacturers are using teflon to produce a sleeve for mounting on the pressure foot. Some other people are trying to use lubricant oil to lubricate the pressure foot. However, the use of teflon sleeve or lubricant oil is not practical and requires additional expense. While in practice, the telflon sleeve produces little effect in friction force reduction, and the use of lubricant oil may contaminate the cloth.
Further, regular pressure foot is served to press on the cloth to sew to facilitate the sewing process. When to obtain a stitched edge, according to conventional method, one is normally having both hands holding up the cloth to guide the cloth forward for stitching along the line drawn on the cloth while one is having both eyes staring at the line. Strictly speaking, the stitching quality is determined according to the experience and the skill of the operator.
According to UK Patent No. 729,355, a pressure foot is having mounted thereon a roller means to smoothen the pressuring force of the pressure foot during sewing process. In this invention, the roller means is set at the rear end on the center of gravity, that is, at a position below the connecting point of the pressure foot - Cont'd/3 ~1 -3- l 33 with the pressure bar. Because the roller means is set at the rear end. the pressure foot is more difficult to stably press downward on the cloth to sew. Therefore. in actual practice smooth feeding of the cloth to sew is difficult to achieve. Further, this invention has no guide means to guide the feeding of the cloth to sew during sewing process. While stitching. one shall have to carefully stare at the sewing machine needle with both hands tentatively controlling the feeding of the cloth.
The main object of the present invention is to provide a new pressure foot structure for sewing machine wherein a plurality of rolling members are mounted on the pressure foot to reduce friction force during sewing process so as to let the fabric or leather cloth to sew be smoothly pushed forward to facilitate the performing of sewing process.
Another object of the present invention is to provide a new pressure foot structure for sewing machine wherein a guide member is mounted on the pressure foot at one lateral side or on the bottom surface at one side to stop against the side edge of the fabric or leather cloth to sew so as to help achieve a straight and quality sewing process.
In accordance with one aspect of the invention there is provided a pressure foot structure for a sewing machine. including:
a pressure foot in the form of a single-sided or double-sided pressure plate having a size properly arranged according to specific stitching requirement, and comprising an elongated notch through - which the sewing machine needle is driven to perform a reciprocating sewing process; a pressure bar having a bottom end connected with said pressure foot and having the top end connected to a linking rod -3a- 1 337028 of the sewing machine to drive said pressure foot to press on the ; fabric or leather cloth to sew; and a spring means set between said pressure foot and said pressure bar to let said pressure foot flexibly pressurize the fabric or leather cloth to sew; wherein said pressure foot comprises one or more elongated slots for setting ! therein a plurality of rolling members having an axis of rotationsubstantially perpendicular to the length of the pressure foot to ~ minimize the friction force during passage therethrough of the . fabric or leather cloth to sew, said rolling members being equally distributed over both the front and rear parts of said pressure : foot, so as to facilitate the sewing process, and having a guide member set at one lateral side or at the bottom edge of one lateral side to guide the feeding of the fabric or leather cloth to sew.
The other objects, features and aspects of this invention will be understood from the B
following detailed description of preferred embodiments of this invention referring to the annexed drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a perspective assembly view of a pressure foot structure embodying the present invention.
Figure 2 is a schematic assembly view of another embodiment of rolling cylinders according to the present invention.
Figure 3 is a schematic assembly view of another embodiment of rolling cylinders according to the present invention.
Figure 4 is a perspective exploded view of a further embodiment of rolling cylinders according to the present invention.
Figure 5 is a schematic assembly view of another embodiment of rolling cylinders according to the present invention.
Figure 6 is a schematic assembly view of a further embodiment of the present invention.
Figure 7 is a perspective exploded view of a yet further embodiment of the present invention.
Cont'd/5 1 337~
Figure 8 is a perspective assembly view of the embodiment of Figure 7.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to the annexed drawings, a pressure foot structure is including a pressure foot (1), a pressure bar (2) and a spring means (3), wherein the pressure foot (1) may be a single-sided or double-sided pressure plate having a size properly arranged according to specific stitching requirement, and being pivotally connected to the pressure bar (2) at the bottom; the pressure bar (2) is having the bottom end connected with the pressure foot (1) and having the top end connected to the sewing machine; and the spring means (3) is set between the pressure foot (1) and the pressure bar (2) to let the pressure foot (1) be flexibly connected to the pressure bar (2).
As shown in Figure 1, the pressure foot (1) is a double-sided type, having an elongated notch (11) in the middle thereof, through which the sewing machine needle is driven to perform reciprocating sewing process; a pair of elongated slots (12) at both sides for setting therein of a plurality of rolling cylinders (13) which rolling cylinders (13) are pivotally connected to the pressure foot (1) by means of respective pivot pins (14);
6 1 337~28 and a flange (150) projecting from the left bottom edge to serve as a guide member (15). During sewing process, the fabric or leather cloth is pressed by the pressure foot (1) having its side edge stopped at the flange (150) of the guide member (15). By means of the effect of the rolling cylinders (13), the friction force between the fabric or leather cloth to sew and the pressure foot (1) is minimized to facilitate the performing of sewing process while the fabric or leather cloth to sew is guided by the guide member (15) to feed forward along a straight line. Therefore, quality sewing process is simply achieved.
Figure 2 illustrates a second embodiment according to the present invention, wherein the pressure foot (1) is including a plurality of circular slots (120) for setting therein of a plurality of rolling balls (130) respectively arranged in parallel, such that the rolling balls (130) each is confined to rotate within the associated circular slot (120) to smoothly feed forward the fabric or leather cloth for performing sewing process.
Figure 3 illustrates a third embodiment according to the present invention. In this embodi-ment, the pressure foot (1) is including a pair of elongated slots (121) set at both sides, which pair of elongated slots (121) each is having a plurality of rectilinear indentations (122) vertically Cont'd/7 disposed therein at one side at equal distance, and a plurality of circular pivot holes (123) hori-zontally disposed therein at the opposite side to match with the rectilinear indentations (122).
A plurality of rolling cylinders (131) are set in the elongated slots (121), which rolling cylinders (131) are arranged in same number equal to the rectilinear indentations (122) and the circular pivot holes (123) and each is having a pivot pin (135) respectively made at both sides such that when the rolling cylinders (131) are set in the elongated slots (121) the pivot pins (135) at one lateral side are inserted into the circular pivot holes (123). Thus, during sewing process, the rolling cylinders (131) will be rotating to smoothly help to push the fabric or leather cloth forward for sewing.
Figure 4 illustrates a fourth embodiment according to the present invention. In this embodi-ment, the pressure foot structure is including a single-sided pressure plate (10) having an elongated slot (12) made thereon for setting therein of a plurality of rolling cylinders (13). A guide member (15) is made at one lateral side to project downward.
Referring to Figures 5 and 6, an alternate form of the guide member (15) is an elongated plate (151) having spring means (152) mounted thereon to flexibly connect to the pressure bar (2) and Cont'd/8 -8- l 337 ~8 (10) to downward protrude beyond the bottom surface of the pressure foot (lO). The elongated plate (151) is also comprising an elongated slot (153) made thereon for setting therein of one or more rolling cylinders (154). Through the said arrange-ment, the elongated plate (151) can be flexibly press on a folded fabric (leather) to let sewing process be smoothly performed.
Oont'd/9
During sewing process through a sewing machine, the fabric or leather cloth is pushing forward by means of an uppeI feeder .member and a lower feeder member, and is pressed by a pressure foot to keep in a smooth and non-corrugation condition to facilitate the performing of sewing process, which pressure foot is flexibly connected to a pressure bar by means of a spring means. During sewing process or while the fabric or leather cloth is feeding forward, friction force.is resulted fr.om the press~re :foot against the fabric or leather cloth to interfere with the performing of the Cont'd/2 sewing process. This problem may become more serious while sewing in a thick and coarse fabric or leather cloth. In order to minimize the friction force resulted from feeding of the cloth during sewing process, some manufacturers are using teflon to produce a sleeve for mounting on the pressure foot. Some other people are trying to use lubricant oil to lubricate the pressure foot. However, the use of teflon sleeve or lubricant oil is not practical and requires additional expense. While in practice, the telflon sleeve produces little effect in friction force reduction, and the use of lubricant oil may contaminate the cloth.
Further, regular pressure foot is served to press on the cloth to sew to facilitate the sewing process. When to obtain a stitched edge, according to conventional method, one is normally having both hands holding up the cloth to guide the cloth forward for stitching along the line drawn on the cloth while one is having both eyes staring at the line. Strictly speaking, the stitching quality is determined according to the experience and the skill of the operator.
According to UK Patent No. 729,355, a pressure foot is having mounted thereon a roller means to smoothen the pressuring force of the pressure foot during sewing process. In this invention, the roller means is set at the rear end on the center of gravity, that is, at a position below the connecting point of the pressure foot - Cont'd/3 ~1 -3- l 33 with the pressure bar. Because the roller means is set at the rear end. the pressure foot is more difficult to stably press downward on the cloth to sew. Therefore. in actual practice smooth feeding of the cloth to sew is difficult to achieve. Further, this invention has no guide means to guide the feeding of the cloth to sew during sewing process. While stitching. one shall have to carefully stare at the sewing machine needle with both hands tentatively controlling the feeding of the cloth.
The main object of the present invention is to provide a new pressure foot structure for sewing machine wherein a plurality of rolling members are mounted on the pressure foot to reduce friction force during sewing process so as to let the fabric or leather cloth to sew be smoothly pushed forward to facilitate the performing of sewing process.
Another object of the present invention is to provide a new pressure foot structure for sewing machine wherein a guide member is mounted on the pressure foot at one lateral side or on the bottom surface at one side to stop against the side edge of the fabric or leather cloth to sew so as to help achieve a straight and quality sewing process.
In accordance with one aspect of the invention there is provided a pressure foot structure for a sewing machine. including:
a pressure foot in the form of a single-sided or double-sided pressure plate having a size properly arranged according to specific stitching requirement, and comprising an elongated notch through - which the sewing machine needle is driven to perform a reciprocating sewing process; a pressure bar having a bottom end connected with said pressure foot and having the top end connected to a linking rod -3a- 1 337028 of the sewing machine to drive said pressure foot to press on the ; fabric or leather cloth to sew; and a spring means set between said pressure foot and said pressure bar to let said pressure foot flexibly pressurize the fabric or leather cloth to sew; wherein said pressure foot comprises one or more elongated slots for setting ! therein a plurality of rolling members having an axis of rotationsubstantially perpendicular to the length of the pressure foot to ~ minimize the friction force during passage therethrough of the . fabric or leather cloth to sew, said rolling members being equally distributed over both the front and rear parts of said pressure : foot, so as to facilitate the sewing process, and having a guide member set at one lateral side or at the bottom edge of one lateral side to guide the feeding of the fabric or leather cloth to sew.
The other objects, features and aspects of this invention will be understood from the B
following detailed description of preferred embodiments of this invention referring to the annexed drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a perspective assembly view of a pressure foot structure embodying the present invention.
Figure 2 is a schematic assembly view of another embodiment of rolling cylinders according to the present invention.
Figure 3 is a schematic assembly view of another embodiment of rolling cylinders according to the present invention.
Figure 4 is a perspective exploded view of a further embodiment of rolling cylinders according to the present invention.
Figure 5 is a schematic assembly view of another embodiment of rolling cylinders according to the present invention.
Figure 6 is a schematic assembly view of a further embodiment of the present invention.
Figure 7 is a perspective exploded view of a yet further embodiment of the present invention.
Cont'd/5 1 337~
Figure 8 is a perspective assembly view of the embodiment of Figure 7.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to the annexed drawings, a pressure foot structure is including a pressure foot (1), a pressure bar (2) and a spring means (3), wherein the pressure foot (1) may be a single-sided or double-sided pressure plate having a size properly arranged according to specific stitching requirement, and being pivotally connected to the pressure bar (2) at the bottom; the pressure bar (2) is having the bottom end connected with the pressure foot (1) and having the top end connected to the sewing machine; and the spring means (3) is set between the pressure foot (1) and the pressure bar (2) to let the pressure foot (1) be flexibly connected to the pressure bar (2).
As shown in Figure 1, the pressure foot (1) is a double-sided type, having an elongated notch (11) in the middle thereof, through which the sewing machine needle is driven to perform reciprocating sewing process; a pair of elongated slots (12) at both sides for setting therein of a plurality of rolling cylinders (13) which rolling cylinders (13) are pivotally connected to the pressure foot (1) by means of respective pivot pins (14);
6 1 337~28 and a flange (150) projecting from the left bottom edge to serve as a guide member (15). During sewing process, the fabric or leather cloth is pressed by the pressure foot (1) having its side edge stopped at the flange (150) of the guide member (15). By means of the effect of the rolling cylinders (13), the friction force between the fabric or leather cloth to sew and the pressure foot (1) is minimized to facilitate the performing of sewing process while the fabric or leather cloth to sew is guided by the guide member (15) to feed forward along a straight line. Therefore, quality sewing process is simply achieved.
Figure 2 illustrates a second embodiment according to the present invention, wherein the pressure foot (1) is including a plurality of circular slots (120) for setting therein of a plurality of rolling balls (130) respectively arranged in parallel, such that the rolling balls (130) each is confined to rotate within the associated circular slot (120) to smoothly feed forward the fabric or leather cloth for performing sewing process.
Figure 3 illustrates a third embodiment according to the present invention. In this embodi-ment, the pressure foot (1) is including a pair of elongated slots (121) set at both sides, which pair of elongated slots (121) each is having a plurality of rectilinear indentations (122) vertically Cont'd/7 disposed therein at one side at equal distance, and a plurality of circular pivot holes (123) hori-zontally disposed therein at the opposite side to match with the rectilinear indentations (122).
A plurality of rolling cylinders (131) are set in the elongated slots (121), which rolling cylinders (131) are arranged in same number equal to the rectilinear indentations (122) and the circular pivot holes (123) and each is having a pivot pin (135) respectively made at both sides such that when the rolling cylinders (131) are set in the elongated slots (121) the pivot pins (135) at one lateral side are inserted into the circular pivot holes (123). Thus, during sewing process, the rolling cylinders (131) will be rotating to smoothly help to push the fabric or leather cloth forward for sewing.
Figure 4 illustrates a fourth embodiment according to the present invention. In this embodi-ment, the pressure foot structure is including a single-sided pressure plate (10) having an elongated slot (12) made thereon for setting therein of a plurality of rolling cylinders (13). A guide member (15) is made at one lateral side to project downward.
Referring to Figures 5 and 6, an alternate form of the guide member (15) is an elongated plate (151) having spring means (152) mounted thereon to flexibly connect to the pressure bar (2) and Cont'd/8 -8- l 337 ~8 (10) to downward protrude beyond the bottom surface of the pressure foot (lO). The elongated plate (151) is also comprising an elongated slot (153) made thereon for setting therein of one or more rolling cylinders (154). Through the said arrange-ment, the elongated plate (151) can be flexibly press on a folded fabric (leather) to let sewing process be smoothly performed.
Oont'd/9
Claims (11)
1. A pressure foot structure for a sewing machine, including: a pressure foot in the form of a single-sided or double-sided pressure plate having a size properly arranged according to specific stitching requirement, and comprising an elongated notch through which the sewing machine needle is driven to perform a reciprocating sewing process; a pressure bar having a bottom end connected with said pressure foot and having the top end connected to a linking rod of the sewing machine to drive said pressure foot to press on the fabric or leather cloth to sew; and a spring means set between said pressure foot and said pressure bar to let said pressure foot flexibly pressurize the fabric or leather cloth to sew; wherein said pressure foot comprises one or more elongated slots for setting therein a plurality of rolling members having an axis of rotation substantially perpendicular to the length of the pressure foot to minimize the friction force during passage therethrough of the fabric or leather cloth to sew, said rolling members being equally distributed over both the front and rear parts of said pressure foot, so as to facilitate the sewing process, and having a guide member set at one lateral side or at the bottom edge of one lateral side to guide the feeding of the fabric or leather cloth to sew.
2. A pressure foot structure for a sewing machine according to claim 1, wherein said guide member is a flange integrally made at one lateral side of said pressure foot to protrude downward therebeyond so as to guide the side edge of the fabric or leather cloth to sew during sewing process.
3. A pressure foot structure for a sewing machine according to claim 2, wherein said flange is made on said pressure foot at the left side along forwarding direction.
4. A pressure foot structure for a sewing machine according to claim 1 or 2, wherein said guide member is an elongated plate connected to said pressure foot at one lateral side to protrude beyond the bottom surface of said pressure foot, having an elongated slot made thereon for setting therein of one or more rolling members.
5. A pressure foot structure for a sewing machine according to claim 1, wherein at least one of said elongated slots is substantially rectangular.
6. A pressure foot structure for a sewing machine according to claim 1, wherein at least one of said elongated slots is substantially circular.
7. A pressure foot structure for a sewing machine according to claim 1, wherein each one of said elongated slots is substantially rectangular wherein each one of the substantially rectangular slots includes a plurality of rectilinear indentations vertically disposed therein at one side at equal distance with a plurality of circular pivot holes horizontally disposed therein at the opposite side to match with the rectilinear indentations, so as to let a plurality of rolling members be respectively set between said rectilinear indentations and said circular pivot holes.
8. A pressure foot structure for a sewing machine according to claim 1, wherein said rolling members are hollow rolling cylinders mounted in said elongated slots by means of pivot pins.
9. A pressure foot structure for a sewing machine according to claim 1, wherein said rolling members are rolling balls set in said elongated slots to rotate therein.
10. A pressure foot structure for a sewing machine according to claim 7, wherein said rolling members are rolling cylinders having pivot pins set at both sides to match with said rectilinear indentations and said circular pivot holes of said elongated slots.
11. A pressure foot structure for a sewing machine according to claim 1, 8 or 9, wherein said rolling members are having a diameter slightly greater than the thickness of said pressure foot such that when said rolling members are positioned in said elongated slots, portions of the rolling members protrude beyond the top and the bottom surface of each one of said elongated slots.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/127,539 US4848257A (en) | 1987-11-30 | 1987-11-30 | Presser foot with fabric guide and rolling element |
| GB8814818A GB2212822A (en) | 1987-11-30 | 1988-06-22 | Presser foot for a sewing machine |
| AU38239/89A AU624394B2 (en) | 1987-11-30 | 1989-07-18 | Innovative pressure foot structure for sewing machine |
| CA000606201A CA1337028C (en) | 1987-11-30 | 1989-07-20 | Innovative pressure foot structure for sewing machine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/127,539 US4848257A (en) | 1987-11-30 | 1987-11-30 | Presser foot with fabric guide and rolling element |
| CA000606201A CA1337028C (en) | 1987-11-30 | 1989-07-20 | Innovative pressure foot structure for sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1337028C true CA1337028C (en) | 1995-09-19 |
Family
ID=25672898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000606201A Expired - Fee Related CA1337028C (en) | 1987-11-30 | 1989-07-20 | Innovative pressure foot structure for sewing machine |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4848257A (en) |
| AU (1) | AU624394B2 (en) |
| CA (1) | CA1337028C (en) |
| GB (1) | GB2212822A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112553792A (en) * | 2019-11-08 | 2021-03-26 | 徐州力达缝纫设备制造有限公司 | Presser foot mechanism of sewing machine |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2232169A (en) * | 1989-06-01 | 1990-12-05 | Bee Lian Lee Lin | Pressure foot structure for sewing machine |
| EP0491999A1 (en) * | 1990-12-28 | 1992-07-01 | Kun-Jung Lee | A sewing machine pressing leg and an adjusting device therefor |
| KR200315321Y1 (en) * | 2003-02-26 | 2003-06-02 | 김희중 | Sewing foot for sewing machine |
| JP6553909B2 (en) * | 2015-03-27 | 2019-07-31 | 蛇の目ミシン工業株式会社 | Sewing machine |
| USD835686S1 (en) * | 2017-09-22 | 2018-12-11 | Clover Mfg. Co., Ltd. | Presser foot with safety guard for sewing machine |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2513343A (en) * | 1946-03-15 | 1950-07-04 | Maxson Amelia | Grip presser foot for sewing machines |
| US2478073A (en) * | 1947-04-29 | 1949-08-02 | Antonelli Bruno | Adjustable work gauging and guiding presser foot |
| US2478032A (en) * | 1947-06-09 | 1949-08-02 | Wallsh Jacob | Gauge foot for sewing machines |
| US2545980A (en) * | 1949-05-05 | 1951-03-20 | Vanadia Frank | Edge stitching presser foot for sewing machines |
| GB675841A (en) * | 1950-06-15 | 1952-07-16 | Leon Doyen | Improvements in or relating to sewing-machine presser-foot devices |
| GB739383A (en) * | 1952-12-22 | 1955-10-26 | British United Shoe Machinery | Improvements in or relating to shoemaking methods and to machines adapted for use therein |
| GB729355A (en) * | 1953-01-30 | 1955-05-04 | W & J Bogod & Company Ltd | An improved presser foot for sewing machines |
| US2948242A (en) * | 1958-07-17 | 1960-08-09 | Shuman Abraham | Presser foot |
| US3511200A (en) * | 1968-10-02 | 1970-05-12 | Robert B Howell | Presser foot assemblies |
| GB1297442A (en) * | 1970-02-25 | 1972-11-22 | ||
| US3726243A (en) * | 1971-08-13 | 1973-04-10 | R Howell | Threading feature for roller type presser foot |
| US3754519A (en) * | 1971-08-25 | 1973-08-28 | R Howell | Presser foot roller with alignment feature |
| CH544833A (en) * | 1972-03-15 | 1973-11-30 | Pfaff Haushaltmasch | Foot for sewing machines for sewing blind stitches |
| JPS5525841U (en) * | 1978-08-11 | 1980-02-19 |
-
1987
- 1987-11-30 US US07/127,539 patent/US4848257A/en not_active Expired - Fee Related
-
1988
- 1988-06-22 GB GB8814818A patent/GB2212822A/en not_active Withdrawn
-
1989
- 1989-07-18 AU AU38239/89A patent/AU624394B2/en not_active Ceased
- 1989-07-20 CA CA000606201A patent/CA1337028C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112553792A (en) * | 2019-11-08 | 2021-03-26 | 徐州力达缝纫设备制造有限公司 | Presser foot mechanism of sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2212822A (en) | 1989-08-02 |
| US4848257A (en) | 1989-07-18 |
| AU3823989A (en) | 1991-06-13 |
| GB8814818D0 (en) | 1988-07-27 |
| AU624394B2 (en) | 1992-06-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |